Magnetic separator.



M. RUTHBNBURG. MAGNETIC SBPARATOR.

APPLICATION FILED JUNn2z,19o7.

Patented Nov. 17,1908.

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)l UMD) INVENTOR:

M. RUTHENBURG.

MAGNETIC SEPABATOR.. APPLICATION IILPD JUNI: z2, 1901.

904,280. Patented N0v.17,19o8.

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M. RUTHENBURG.

MAGNETIC SEPABATOR.

APPLICATION FILED JUNI: 22, 1907.

Patented NOV. 17, 1908.

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WITNESSES:

M. RUTHENBURG.

MAGNETIC SEPARATOR.

APPLIoATIoN FILED JUNI: zz, 1907,

4 SHEETS-SHEET 4.

Patented Nov. 17, 1908.

INVENTOR. M/fJwiW//f/ JM wm-uasslas= 1HE .NcRms PETERS ca.. wAsmNaroN, nA c4 MARCUS RUTHENBURG, OF LOCKPORT, N. Y.

MAGNETIC SEPARATOR.

Specification of Letters Patent.

Application filed June 22, 1907.

To all whom it may concern:

Be it known that I, MARCUS ItU'rI-IENBURG, of Lockport, in the State of New York, have invented a certain new and useful Improvement in Magnetic Separatore, whereof the following is a specification, reference being had to the accompanying drawings.

My invention relates to separators wherein the material to be treated is conveyed, by an endless belt, into a concentrated magnetic field, adapted for the separation of paramagnetic substances of very low magnetic permeability or susceptibility and especially the separation of ferruginous material from comminuted ores or mixtures wherein such material is present in such small proportion or in such chemical combination as not to be separable by ordinary means.

My invention is advantageous in that it may be employed to separate, on a commercial scale, substances of such low magnetic susceptibility that they are rated as nonmagnetic, for instance hematite or limonite present in admixture with sand in ore deposits. As hereinafter described the lines of magnetic force are caused to pass directly through the conveyor belt between opposed pole pieces which are bell shaped and caused to rotate on an axis at right angles to the plane of the belt at a speed corresponding with the speed of the belt, and the magnetizable particles are attracted to and carried aside by the upper pole piece, from which they are discharged apart from the gangue by a discharging belt which passes between said pole pieces and wipes said particles therefrom.

In view of the prior art it may be noted that it is characteristic of my invention that but a single thickness of conveyer belt is interposed between the opposed pole pieces and in such proximity thereto as to insure the maximum magnetic effect from a given current.

My invention comprises the various novel features of construction and arrangement hereinafter more definitely specified.

Figure I, is a plan view of a separator conveniently embodying my improvement. Fig. II, is a central longitudinal sectional view of said separator, taken on the line II, II, in Fig. I, the magnet being shown in elevation. Fig. III, is a vertical sectional View Patented Nov. 17, 1908.

Serial No. 380,265.

of the rotary magnet, taken on the line III, III, in Fig. IV. Fig. IV, is a fragmentary plan view of the lower section of the magnet shown in Fig. III.

In the drawings; the bed plate l, comprises the bearings 2, 3, 4, and 5, for the main shaft 7, which is provided with the driving wheel 8. IVhen said shaft 7, is rotated in the direction of the arrow marked on said wheel S, it effects longitudinal movement of the endless belt conveyors 10, in opi posite directions, as indicated by the arrows marked thereon, in F ig. I, such movement being effected as follows:-Said shaft 7, is provided with the beveled gears 12, and 13, respectively engaging the beveled gears 14, and 15, on the vertical shafts 16, and 17, the latter being mounted at the opposite ends of the bed plate 1, in bearings 20, and 21, as shown in Fig. II. Said shafts 16, and 17, are respectively provided with the beveled gears 23, and Q4, engaging the beveled gears 2G and 27, on the respective conveyor shafts 29, and 30, which carry the drums 31 and 32, supporting said endless conveyer belts l0, and are mounted in the standards 33, on the bed plate 1. Said belts lO, are thus drawn taut on their upper runs by the drums 31, which are rigidly connected with the respective shafts 29, and 30. The drums 32, being loosely mounted on said shafts serve merely to support said belts 10, in proper position for eoperation with the magnet frame 35, and said belts are also supported and guided by the rollers 36, in the tables 37, supported by the standards 3S. Said shaft 7, is also arranged to rotate said magnet frame 35, in the direction of the arrow marked thereon in Fig. I, being connected therewith as follows z--Said shaft 7, has the beveled gear 39, shown in Fig. II, engaging the beveled gear 40, which is carried by the vertical magnet shaft 41, mounted in the bearings 42 and 43, the former being in the bed plate 1, and the latter in the arched standard 45, which, as shownin Fig. I, rests upon said bed plate 1, and extends over said magnet fra-me 35. Said magnet frame 35, comprises two oppositely counterpart core sections 48 and 49, which are normally maintained in rigid relation with the magnet shaft 41, but are separable as hereinafter described. Said core sections respectively comprise the two opposed annular bell shaped polar projections 50 and 51, which are respectively in unitaryA relation therewith. Said cores are encircled and respectively energized by the coils 52 and 53, which are respectively retained by the upper diaphragm 55, and the lower diaphragm 56, shown in section in Fig. III. Said diaphragms 55 and 56, are annular plates of diamagnetic material, for instance, brass, which are respectively inclosed by said polar projections 50 and 51, and are respectively coupled by the screws 58 and 59, with the rim iianges 00 and 61, which are also of diamagnetic material. It may be observed that said diaphragms and rims have opposed faces presented to the belts 10, and extending in planes respectively coincident with the proximal faces of said polar projections 50 and 51. The gap space 63, between said opposed polar projections 50 and 5l, is limited to such an extent as to permit the passage of a single thickness of the belts 10, when carrying a layer of the comminuted material G4, which is to be treated and afford sufficient clearance to permit the magnetizable particles G5, of said material which are uplifted to the pole 50, to be carried by and with the latter aside from the gangue 6G. rlhe niagnetizable material 65, uplifted from said belts 10, and carried aside therefrom by the polar projections 48, above described is i discharged at regions G7, indicated in Fig. I;

such discharge being eected by the discharging belt 68, which extends through the gap space 53, and is supported by the sheaves G9 and 70, respectively carried by the vertical shafts 71 and 72, mounted to rotate in the bearings 73 and 74, in the frame 1, as shown in Fig. II. Said shaft 71, is provided with the collars 7 6, which maintain it in proper relation with its bearing 73, and, said shaft 72, is provided with the collar 78, and sprocket wheel 79, which maintain it in proper relation with its bearing 74. Said sprocket wheel 79, is connected by the chain 80, with the sprocket wheel 82, on the shaft 17, so that said discharging belt 68, is driven in the direction of the arrow marked thereon in Fig. I, to deliver the magnetizable particles 65, of said material 64, over the edge j of the magnet frame rim G1, at the regions G7, where it is caught by chutes 84, or other suitable receptacles. The gangue 66, which is carried by the belts 10, away from the magnet frame 35, and discharged over the drums 31, may be caught in chutes 85, or other suitable receptacles.

As shown in Figs. III and IV, said coil 52, is provided with the leads 90 and 91, extending through the insulating bushing 92, clips 93, and bushing 94, to the passageway 95, in the shaft 41, which is provided with the insulating lining 96. Similarly the coil 53, is provided with the leads 98 and 99, ex-

tending through the insulating bushing 100, clips 101, and bushing 102,*to said passageway 95. Said leads 90, 91, 98 and 99, connect said coils 52 and 53, with the slip rings 103 and 104, on the drum 105, shown in Fig. II, which is rigidly mounted on the top of said shaft 41. Said rings are respectively connected by the brushes 106, and 107, with the leads 108 and 109, which extend to an electric generator. Said brushes 106 and 107, extend in the holders 110, supported by the standards 111, in the casing 112, and said standards and casing are rigidly secured on the arched standard 45, of the frame 1.

As shown in Fig. III, said cores 48 and 49, are respectively separably secured in rigid relation with said shaft 41, by the keys 114 and 115; said section 49, being supported by the shoulder 116, on said shaft, and said section 48, being retained by the nut 118, which engages the thread 119, on said shaft. Therefore, said magnet frame sections 48 and 49, may be readily removed from said shaft 41, for repairs, and, to facilitate such removal are respectively provided with the eye bolts 120, shown in Fig. III.

As shown in Fig. IV; said coils 52 and 53, are retained in rigid relation with the respective sections 48 and 49 of the magnet frame 35, by the bands 121 and 122, which are retained lby the screw rivets 124 and 125. Said coils 52 and 53, are also provided with insulating coverings 126 and 127, and pachings 128 and 129, interposed between said coils and the adjacent metal surfaces, as shown in Fig. III.

It is obvious that various modifications may be made without departing from the essential features of my invention, as defined in the appended claims, and, therefore I do not desire to limit myself to the precise details of construction and arrangement herein set forth.

I claim 1. In a magnetic separator, the combination with a vertical rotary shaft; of a magnet frame carried in rigid relation with said shaft, comprising opposed annular polar projections; two annular diaphragms respectively opposed in alinement with said polar projections; and, an endless belt conveyer extending between said diaphragms in eccentric relation to said rotary magnet frame, substantially set forth.

2. In a magnetic separator, the combination with two conv yer belts; of means arranged to progress said belts in opposite directions; a magnet mounted to rotate on an.

axis between said belts and comprising a single polar projection overhanging both said belts; and, a discharging belt disposed between said conveyer belts, substantially as set forth.

' 3. In a magnetic separator, the combination with a vertical rotary shaft; of a magnet carried in rigid relation with said shaft, comprising opposed annular polar projections; two conveyer belts extending between said polar projections; means supporting said conveyer belts comprising horizontal shafts, and drums on said shafts; a discharging belt extending between said polar projections and between said conveyer belts; vertical shafts supporting said discharging belt; a main driving shaft; and means operatively connecting said main shaft with said magnet shaft and belt shafts, substantially as set forth.

t. In a magnetic separator, the combination with a magnet comprising annular projections opposed in separated relation, and arranged to rota-te on a vertical axis; of two `conveyer belts extending' in a horizontal plane between said polar projections, upon respectively opposite sides of the axis of said magnet; a discharging belt extending between said polar projections and between said conveyer belts in a horizontal plane; and, means arranged to contemporaneously rotate said magnet and progress said belts in opposite directions, substantially as set forth.

5. In a magnetic separator, the combination with a magnet comprising annular projections opposed in separated relation, and arranged to rotate on a vertical axis; of two conveyer belts extending in a horizontal plane between said polar projections, upon respectively opposite sides of the axis of said magnet; a discharging belt extending between said polar projections and between said conveyer' belts in a horizontal plane; and, means arranged to contemporaneously rotate said magnet and progress said belts, substantially as set forth.

(5. In a magnetic separator, the combination with a magnet comprising annular polar projections, opposed in separated relation and arranged to rotate on a vertical axis; of two conveyer belts extending in a horizontal plane between said polar projecf tions, upon respectively opposite sides of the axis of said magnet; and, means arranged to contemporaneously rot-ate said magnet and progress said belts in opposite directions, substantially as set forth.

7. In a magnetic separator, the combination with a magnet comprising annular polarprojections, opposed in separated relation and arranged to rotate on a vertical axis; of two conveyer belts extending in a horizontal plane between said polar projections, upon. respectively opposite sides of the axis of said magnet; and means arranged to contemporaneously rotate said magnet and progress said belts, substantially as set forth.

8. In a magnetic separator, the combination with a magnet comprising annular polar projections opposed in separated relation; of two conveyer belts extending between said polar projections upon respectively opposite sides of the axis of said magnet; and, means arranged to contemporaneously rotate said magnet, and progress said belts in opposite directions, substantially as set forth.

9. In a magnetic separator, the combination with a magnet comprising annular polar projections opposed in separated relation; of two conveyer belts extending between said polar projections upon respectively opposite sides of the axis of said magnet; a discharging belt extending between said polar projections and between said conveyeil belts; and, means arranged to contemporaneously rotate said magnet and progress said belts, substantially as set forth.

10. In a magnetic separator, the combination with a magnet comprising annular projections opposed in separated relation, and arranged to rotate upon a vertical axis; of a conveyer belt extending in a horizontal plane between said polar projections, eccentric to the axis of said magnet; a discharging belt extending between said polar projections and between said conveyer belt and the magnet axis; and, means arranged to contemporaneously rotate saidmagnet and progress said belts, substantially as set forth.

l1. In a magnetic separator, the combination with a magnet comprising annular polar projections, opposed in separated relation and arranged to rotate on a vertical axis; of a conveyer belt extending in a horizontal plane between said polar projections, eccentric to the axis of said magnet; and means arranged to contemporaneously rotate said magnet and progress said belt, substantially as set forth.

12. In a magnetic separator, the combination with a rotary magnet comprising annular polar projections opposed in separated relation; of a conveyer belt extending in a plane between said projections; and, two annular diamagnetic diaphragms respectively opposed in said frame in alinement with said projections, substantially as set forth.

13. In' a magnetic separator, the combina tion with a rotary magnet comprising annular polar projections opposed in separated relation; of a conveyer belt extending in a plane between said projections; and, annular diaphragms opposed in said frame in separated relation, substantially as set forth.

14. In a magnetic separator, the combination with a vertical rotary shaft; of a magnet frame carried in rigid relation with said shaft, comprising annular polar projections opposed in separated relation; a conveyer belt extending in a horizontal plane between said polar projections; and, coils disposed in concentric relation With said ative relation With Said polar projections, 10

polar projections, inclosed by and arranged to energize the latter, substantially as set forth.

15. ln a magnetic separator, the combination with a vertical rotary shaft; of a magnet carried by said shaft, comprising annular polar projections; and, a conveyer belt extending in a horizontal plane in opersubstantally as set forth.

In testimony whereof, I have hereunto signed my naine, at London, England, this tenth day of J une 1907.

MARCUS RUTHENBURG.

Witnesses:

ALFRED NUTTING, PERCY PHILLIPrs. 

